Horton

Add test case for same-type reordered FK columns

Amit Langote <amitlan@postgresql.org>

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Commit: 009ea1b08d7b8843435bd0f1137fa3df09aac79f
Author: Amit Langote <amitlan@postgresql.org>
Date: 2026-04-10T08:44:06Z
Releases: 19 (unreleased) 
Add test case for same-type reordered FK columns

The test added in 980c1a85d819 covered reordered FK columns with
different types, which triggered an "operator not a member of opfamily"
error in the fast-path prior to that commit.  Add a test for the
same-type case, which is also fixed by that commit but where the wrong
scan key ordering instead produced a spurious FK violation without any
internal error.

Reported-by: Fredrik Widlert <fredrik.widlert@digpro.se>
Discussion: https://postgr.es/m/CADfhSr8hYc-4Cz7vfXH_oV-Jq81pyK9W4phLrOGspovsg2W7Kw@mail.gmail.com

Files

PathChange+/−
src/test/regress/expected/foreign_key.out modified +10 −0
src/test/regress/sql/foreign_key.sql modified +9 −0

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